package cn.wolfcode.luowowo.website.resolver;

import cn.wolfcode.luowowo.website.annotion.UserParam;
import cn.wolfcode.luowowo.cache.service.IUserInfoRedisService;
import cn.wolfcode.luowowo.member.domain.UserInfo;
import cn.wolfcode.luowowo.website.util.CookieUtil;

import com.alibaba.dubbo.config.annotation.Reference;
import org.springframework.core.MethodParameter;
import org.springframework.web.bind.support.WebDataBinderFactory;
import org.springframework.web.context.request.NativeWebRequest;
import org.springframework.web.method.support.HandlerMethodArgumentResolver;
import org.springframework.web.method.support.ModelAndViewContainer;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

//自定义参数解析器
public class UserInfoArgumentResolver implements HandlerMethodArgumentResolver{

    @Reference
    private IUserInfoRedisService userInfoRedisService;

//表示这个解析器解析什么方法参数
    @Override
    public boolean supportsParameter(MethodParameter methodParameter) {
        return methodParameter.getParameterType()== UserInfo.class
                && methodParameter.hasParameterAnnotation(UserParam.class)
                ;
    }

    @Override
    public Object resolveArgument(MethodParameter methodParameter, ModelAndViewContainer modelAndViewContainer, NativeWebRequest nativeWebRequest, WebDataBinderFactory webDataBinderFactory) throws Exception {
        HttpServletRequest request = nativeWebRequest.getNativeRequest(HttpServletRequest.class);
        HttpServletResponse response = nativeWebRequest.getNativeResponse(HttpServletResponse.class);

        String token = CookieUtil.getToken(response, request);
        UserInfo userByToken = userInfoRedisService.getUserByToken(token);

        return userByToken;
    }
}
